update doc for MavenCentral

README.md

@@ -12,8 +12,21 @@ Check out the Website <http://www.graphstream-project.org/> for more information
 
 The release comes with a pre-packaged jar file named gs-core.jar that contains the GraphStream classes. To start using GraphStream, simply put it in your class path. You can download GraphStream on the [github releases pages](https://github.com/graphstream/gs-core/releases), or on the website <http://www.graphstream-project.org/>.
 
-Maven users, you may include gs-core as a dependency to your project using (https://jitpack.io). 
-Simply add the `jitpack` repository to the `pom.xml`:
+Maven users may include major releases of `gs-core` as a dependency:
+
+```xml
+<dependencies>
+    <dependency>
+        <groupId>org.graphstream</groupId>
+        <artifactId>gs-core</artifactId>
+        <version>2.0</version>
+    </dependency>
+</dependencies>
+```
+
+### Development Versions
+
+Using <https://jitpack.io> one can also use any development version. Simply add the `jitpack` repository to the `pom.xml` of the project:
 
 ```xml
 <repositories>
@@ -27,11 +40,13 @@ Simply add the `jitpack` repository to the `pom.xml`:
 then, add the `gs-core` to your dependencies:
 
 ```xml
-<dependency>
-    <groupId>com.github.graphstream</groupId>
-    <artifactId>gs-core</artifactId>
-    <version>2.0</version>
-</dependency>
+<dependencies>
+    <dependency>
+        <groupId>com.github.graphstream</groupId>
+        <artifactId>gs-core</artifactId>
+        <version>dev-SNAPSHOT</version>
+    </dependency>
+</dependencies>
 ```
 
 You can use any version of `gs-core` you need. Simply specify the desired version in the `<version>` tag. The version can be a git tag name (e.g. `2.0`), a commit number, or a branch name followed by `-SNAPSHOT` (e.g. `dev-SNAPSHOT`). More details on the [possible versions on jitpack](https://jitpack.io/#graphstream/gs-core).